Finding the Third Proportional to 1,236,240 and 1,871,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,240 : 1,871,688 = 1,871,688 : x
2. Step 2: Convert to fraction form
   1,236,240/1,871,688 = 1,871,688/x
3. Step 3: Cross multiply
   1,236,240x = 1,871,688 × 1,871,688
4. Step 4: Simplify right side
   1,236,240x = 3,503,215,969,344
5. Step 5: Solve for x
   x = 3,503,215,969,344/1,236,240
6. Step 6: Final answer
   x = 2,833,766.88